Anne Frank thinks that Hermann van Pels is smart, but a bit too sure that he’s always right. In her diary, on August 9, 1943, she writes: "Usually joins in the conversation, never fails to give his opinion. Once he’s spoken, his word is final. If anyone dares to suggest otherwise, [he] can put up a good fight. Oh, he can hiss like a cat. . . but I’d rather he didn’t. Once you’ve seen it, you never want to see it again. His opinion is the best, he knows the most about everything."